Valve-reseating tool.



T. B. WILLIAMS.

VALVE RESEATING TOOL.

APPLICATION IILBD 111113.12, 1909.

934,642 Pa ented Sept. 21, 1909.

UNITED sTATEs Pgrnnrr OFFICE.

THOMAS E. WILLIAMS, OF ORANGE, MASSACHUSETTS, ASSIGNOR TO THE LEAVITTMACHINE COMPANY, OF ORANGE, MASSACHUSETTS.

VALVE-RESEATING TOOL.

Application filed March 12, 1909.

useful Valve-Reseating Tool, of which thefollowing is a specification.

This invention relates to improvements in that type of valve reseatingtools illustrated and described in Letters Patent No. 129,939 granted toCharles L. Morse, June 10, 1890, said tool comprising, broadly speaking,a support, a chuck, and a rotary spindle carrying a cutter.

In the use of the tool above referred to, the spindle which carries thecutter is liable to become bent or distorted so as to be prac-Specification of Letters Patent.

tically inoperative. This is due to the inad- I equacy of the bearingsupport for the spindie, and the present invention is designed to remedythis structural defect.

Another object of the invention is to provide improved means foradjusting the chuck lengthwise with respect to the spindle so that thetool can be quickly applied to a deep-seated valve.

\Vith the foregoing objects in view, the invention consists in a novelconstruction and arrangement of parts to be hereinafter described andclaimed, reference being had to the drawing hereto annexed in whichFigure 1 is an elevation of the tool, Fig. 2 is a central verticalsection, Fig. 3 is a perspective view of the spindle and chuck supporting frame, Fig. 4 is a transverse section on the line H of Fig. 1.

The supporting frame of the spindle and chuck comprises a tubular member5 through the bore of which the spindle 6 passes, said bore being linedat one of its ends with a bearing bushing 7 At the opposite end there isa counterbore which is screwthreaded to receive the tubular portion 8 ofa member 9 which carries the chuck jaws 10. The chuck jaws are operatedin the ordinary manner by a rotatable ring 11 having on its under side aspiral groove in which work the racks of the chuck jaws. This chuck isan ordinary one, and as nothing is claimed with respect thereto, afurther description thereof is thought unnecessary.

The tubular member 5 is slidably mounted on rods 12, three of such rodsbeing provided. That end of the member 5 which carries the chuck isenlarged as indicated at Patented Sept. 21, 1909.

Serial No. 482,963.

13, and in said enlargement are openings 1 1 6 through which the rodspass. The other portion of the member 5 has grooves 15 in its outersurface to accommodate the rods.

The member 5 is slidable lengthwise on the rods 12 and is locked inadjusted position thereon by means of a collar 16 encircling the same,the inner periphery of the collar having grooves 17 to accommodate therods. A set screw 18 threaded through the collar is engageable with oneof the rods 12, and a set screw 19 also threaded through thecollar isengageable with the member 5. It will be seen that upon tightening upthe set screws the member 5 will be securely locked on the rods 12, andupon loosening said set screws, it is free to be slid up and downthereon.

The lower ends of the rods are connected by means of a crosshead 20provided with a central opening 21 to receive the spindle 6. Thecrosshead also has openings to receive the ends of the stems, and saidends are secured in said openings in any suitable manner. The oppositeends of the stems are connected to a collar 22, said collar having atone of its ends an ofi-standing annular flange 28 to which the stemsotherwise rigidly secured. The collar is screw-threaded interiorly toreceive the'feed screw 2t of the spindle 6. This feed screw is a sleevemounted on the spindle 6 and operated by a hand wheel 25. To the spindleis fitted a hand wheel 26 for operating the same. Upon turning the handwheel 25 the spindle is fed forward, and upon turning the hand wheel 26the spindle is rotated, and when both hand wheels are turnedsimultaneously, the spindle is fed forwardly and also rotated at thesame time. The lower end of the spindle is reduced and screwthreaded toreceive the cutter 27. On the feed screw 24L is threaded a collar 28which, when brought into engagement with the col lar 22 acts as a jamnut and prevents rotation of said screw.

By providing the member 5, the spindle 6 is given a bearing support fora greater portion of its length, and is thus held firmly seated, andprevented from being bent or distorted when in use. Upon loosening theset screws 18 and 19, the member 5 can be shifted up or down on thespindle, and the tool is thus adjusted for deep-seated -or shallowvalves without resorting to the feed are riveted or screw, arid theadjustment can therefore be quickly made.

What is claimed is:

1. In a valve reseating tool, the tubular member, rods passingtherethrough on which said member is slidable, means for locking themember on the rods, a feed nut carried by the rods, a chuck carried bythe tubular member, a tool spindle passing through the tubular member,and a feed screw on the spindle engageable with the feed nut.

2. In a valve reseatingtool, a spindle having a feed screw, a tubularmember through which the spindle passes, rods passing through saidmember and on which rods the member is slidable, means for locking themember on the rods, a connection between the rods at the ends thereof,and having openings to receive the spindle, one of said openings beingthreaded to receive the feed screw, and a chuck carried by the tubularmember.v v

3. In a valve reseating tool, a tubular 1 member having an enlargedportion pro vided with openings, rods passing through said openings ofthe enlarged portion and fitting the outer surface of the other portionof the member, said member being slidable V on the rods, a collarencircling the member, and having its inner periphery grooved toaccommodate the rods, set screws passing through the collar andengageable respectively with the member and with one of the rods, achuck carriedby said member, a feed nut carried by the rods, a toolspindle passing through the tubular member, and a feed screw on thespindle engageable with the feed nut.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

THOMAS E. WILLIAMS.

Witnesses J Aims D. KIMBALL, BURTON C. BANGS.

